A197802 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,1,0,1 for x=0,1,2,3,4

4, 154, 3713, 84258, 1944779, 45619023, 1067467454, 24842719624, 579640352124, 13530437284867, 315670688353352, 7364450700523381, 171831664404352036, 4009212488981256092, 93541351813085948519, 2182487674635263780504

Offset

1,1

Comments

Every 0 is next to 0 4's, every 1 is next to 1 2's, every 2 is next to 2 1's, every 3 is next to 3 0's, every 4 is next to 4 1's

Column 5 of A197805

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions containing all values 0 to 4 for n=4
..2..1..0..3..0....0..0..2..1..0....0..1..2..2..1....2..1..0..0..0
..1..4..1..0..0....0..0..1..4..1....1..4..1..1..0....1..4..1..1..2
..1..1..2..0..1....3..0..0..1..2....2..1..0..3..0....1..1..2..0..1
..2..1..0..1..2....0..0..3..0..0....0..0..3..0..0....2..1..0..3..0

Crossrefs

Sequence in context: A158104 A244448 A197204 * A229313 A300530 A303898

Adjacent sequences: A197799 A197800 A197801 * A197803 A197804 A197805

Keyword

nonn

Author

R. H. Hardin Oct 18 2011

Status

approved